Christophe Bailly Professor of Acoustics and Fluid Mechanics Ecole Centrale de Lyon (ECL) in France Presentation Title: Solving aeroacoustic problems with high-fidelity compressible large-eddy simulations Abstract: This talk focuses on the direct computation of aerodynamic noise, which has emerged over the last two decades, and the importance of simulating high-Reynolds number turbulent shear flows with fidelity. In our research team, they are greatly benefited from the development of low-dissipation low-dispersion algorithms, and from methodologies based on a relaxation filtering for large-eddy simulations, as an alternative to subgrid-scale models using an eddy viscosity. Aeroacoustics is today a central element in many engineering areas as aeronautics, ground transportations or energy production. Select problems are presented and discussed to illustrate progress in understanding noise generation mechanisms and new trends in computational aeroacoustics. In particular, direct links between sound emission and turbulent events can be directly provided for noise source identification of round subsonic jets, and aeroacoustic couplings can be accurately reproduced. Biography: Christophe Bailly is a Professor of Acoustics and Fluid Mechanics at Ecole Centrale de Lyon (ECL) in France, and junior member of the Institut Universitaire de France (IUF). He received his Ph.D. in Aeroacoustics from the Ecole Centrale Paris in 1994, and joined the Centre Acoustique (http://acoustique.ec-lyon.fr/) of the Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA UMR CNRS 5509) at ECL in 1995. His research activities lie in the area of turbulence and noise generation with current emphasis on computational aeroacoustics, compressible large eddy simulation, jet noise and sound wave propagation. He is the recipient of the Yves Rocard Prize from the French Acoustical Society (1996) and of the Alexandre Joannidès Prize from the French Academy of Sciences (2001). He has authored or co-authored over 60 papers in refereed Journals and 1 textbook in Turbulence. He is currently an Associate Editor of the American Institute of Aeronautics and Astronautics (AIAA) Journal.